table-fake-caption

A table's first row should not stand in for a real <caption>

Flags tables with no <caption> whose first row has a single non-empty cell while other rows have multiple cells, for manual review of whether that cell is acting as a fake caption.

Applies to. `<table>` elements with no `<caption>` child, at least two rows, and a first row containing exactly one non-empty-text cell while at least one other row has more than one cell.

Expectation. A single lone cell in the first row, sitting above rows that clearly have multiple columns, strongly suggests the author is using it as a visual caption/title rather than as a real table cell. Structure conveyed only through this positional convention is not programmatically associated with the table the way a real `<caption>` element is (1.3.1).

Examples

<table>
  <tr><td>Monthly Sales Report</td></tr>
  <tr><td>Jan</td><td>100</td></tr>
  <tr><td>Feb</td><td>200</td></tr>
</table>

<table>
  <caption>Monthly Sales Report</caption>
  <tr><td>Title cell</td></tr>
  <tr><td>Jan</td><td>100</td></tr>
</table>

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